Source code analysis: Laravel queue
Preface
Laravel's queue service provides unified APIs for various background queue services. The queue allows you to delay the execution of time-consuming tasks, such as sending an email. This effectively reduces the request response time.
1. OverviewIn web development, we often encounter the need to batch processing tasks, such as mass mailing, second kill eligibility, etc., we put these time-consuming or high concurrent operations in the queue asynchronous execution can effectively reduce system pressure, improve system response speed and load capacity.
There are many ways to implement queues, and Laravel also supports a variety of
encode, into Apollo. Write a work command, parse the JSON object in this command, and invoke a different method of processing according to the action and parameters inside it. Running the command on a different machine at the same time as the daemon is running, and it is also a scheme to implement asynchronous multitasking applications. Just keep using it until you find Laravel. Going to look into it. It is not impossible if it is possible to replace
Use a Supervisor to manage your Laravel queue
The Laravel official website does not mention using it to write CLI applications, that is, daemon processes or executable scripts. However, it provides more convenient Queue functions.Laravel queue
During application development,
Notes on Laravel queue
Because I advocate simplicity, I hate all so-called "heavyweight" frameworks, such as "Laravel". Sometimes this hatred is even paranoid, if my resume says "proficient Laravel", I will not hesitate to PASS the candidate. But now I admit that I like Laravel
Alarm triggered by a Laravel queue
An alarm is reported on one server. The memory usage is too high. It is strange that other servers in the cluster are okay. However, from past experiences, there is a strange answer behind every incredible question.
First, check the memory usage through "free-m" and find that 6893 M is used, with 976 M left:
Free
Then, click "top" to check which processes occupy a large am
Laravel uses a queue to send messages.
Preface
This article mainly introduces the content related to sending emails to queues in Laravel for your reference. I will not talk about the content below. Let's take a look at the details:
Batch processing tasks are often used in our development, such as mass mailing, message notifications, text messages, and Flash sales
Original http://huoding.com/2015/07/31/457
Because I admire simplicity, I hate all the so-called "heavyweight" frameworks, such as "laravel", and sometimes this hatred is even paranoid enough that if I see a resume that says something like "mastery of laravel", "then I will not hesitate to PASS the candidate off. But now I admit a little like "laravel", alt
What does laravel queue mean, how it works, and in what scenarios will it be used? What does laravel queue mean, how it works, and in what scenarios will it be used?
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What does laravel queue mean, how it works, a
What does the Laravel queue mean, what is the principle of implementation, and what is the general scenario used in the queue?
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What does the Laravel queue mean, what is the principle of implementation, and what is the general scenario used in the
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makeIs the command for creating the php file.make:commandIs to create a command line task, for example, you have created a commandtest, You can executephp artisan testTo execute the test task.
Tasks used for queue execution generally use "Job ",php artisan make:jobCreate a job class and use it in the codedispatch(new FooJob)To execute this task. If you need this job to be executed in the
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makeis the command to create a PHP file, you make:command create a command line task, such as you create a command, you can execute the test test task at the command line php artisan test .
The tasks used for queue execution are typically "Job", by php artisan make:job creating a job class and then dispatch(new FooJob) performing this task in code. If this job is required to execute (asynchronously) i
270at Dispatcher->pushcommandtoqueue (Object (Beanstalkdqueue), Object (Sendemailjob)) in dispatcher.php line 245at Dispatcher->dispatchtoqueue (Object (sendemailjob)) in dispatcher.php line 175at Dispatcher->dispatch ( Object (Sendemailjob)) in dispatchesjobs.php line 17 inside the console PHP artisan Queue:listen [errorexception]
Argument 1 passed to Illuminate\queue\jobs\job::resolveandfire () must is of the type ArraY, null given, called in F:\wa
What is laravel's dbqueue implementation principle? What is laravel's db queue implementation principle?
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What is laravel's db queue implementation principle?
PHP has no Daemon feature, so that any persistent information must be stored in the DB. Laravel queue implementation can be summarized in o
one time, it is very time-consuming, not to mention may need to deal with hundreds of thousands of servers. This is hard to do at the thread level, knowing that in response to a request for a thread in the web process, after the disconnection of the TCP connection, the process is likely to be killed, like Apache, of course, can be configured to change the behavior of Apache, but obviously not very reliable.A better way to do this is to start a daemon on the Web server, so the question is how to
A scheduled task is added to the queue. for some reason, this task does not need to be executed. how can I delete a specified task from the queue? A scheduled task is added to the queue. for some reason, you do not need to execute this task.
How can I delete a specified task from the queue?
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